v3.10.0.1
Statement Of Cash Flows - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Cash Flows from Operating Activities:    
Net loss $ (14,368,530) $ (25,294,503)
Adjustments to reconcile net loss to net cash used in operating activities:    
Compensatory stock 22,650 31,200
Depreciation and amortization 48,211 42,358
Amortization of premiums and discounts on marketable securities, net 39,251 52,012
Stock-based compensation 1,228,335 1,044,167
Amortization and termination of deferred research and development arrangement (375,000) (75,000)
Unrealized gain (loss) on fair value of warrants 5,546,049 (7,594,162)
Financing expense   552,627
Amortization of deferred lease incentive (12,443) (12,444)
Deferred rent (24,381) (10,036)
Changes in assets and liabilities:    
Prepaid expenses and other assets 230,694 (696,024)
Accounts payable and accrued expenses (81,376) 1,351,426
Net Cash Used in Operating Activities (18,838,638) (15,420,055)
Cash Flows from Investing Activities:    
Purchase of equipment (39,224) (75,168)
Purchase of marketable securities   (21,017,610)
Redemption of marketable securities 11,950,220 11,720,000
Net Cash Provided by (Used In) Investing Activities 11,910,996 (9,372,778)
Cash Flows from Financing Activities:    
Issuance of common stock and units, net of issuance costs 6,872,789 16,681,921
Payment of deferred offering costs (100,000)  
Proceeds from exercise of stock warrants   5,354,093
Proceeds from exercise of stock options   77,500
Net Cash Provided by Financing Activities 6,772,789 22,113,514
Net Decrease in Cash and Cash Equivalents (154,853) (2,679,319)
Cash and Cash Equivalents - beginning of period 8,899,154 11,578,473
Cash and Cash Equivalents - end of period 8,744,301 8,899,154
Non-cash financing and investing activties:    
Warrants issued $ 4,841,830 6,738,701
Warrant liability extinguishment from exercise of warrants   $ 8,052,594

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